Wastegate arrangement for an exhaust gas turbocharger

US11536193B2 · kind B2 · utility

Assignee

• BMTS Technology GmbH & Co. KG · DE

Inventors

• Timo Tries · Schwieberdingen, DE
• Fabian Haslinger · Mannheim, DE
• Volker Tietsch · Weissach, DE
• Franz Starke · Kornwestheim, DE
• Niklas Rodeck · Stuttgart, DE
• Carsten John · Ludwigsburg, DE

Key dates

• Filing date: Feb 17, 2022
• Grant date: Dec 27, 2022
• Expiry date: Feb 17, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a wastegate arrangement for an exhaust gas turbocharger comprising a turbine housing (10) having a bearing mount (19), wherein the bearing mount (19) receives a bearing bushing (50) having a drilled hole (51), wherein the drilled hole (51) holds a shaft (31) having a first shaft end (31.1) disposed in the turbine housing (10), and having a second shaft end (31.2) retained outside the turbine housing (10), wherein the first shaft end (31.1) of the shaft (31) is coupled to a wastegate flap (37) disposed in the turbine housing (10) to close a wastegate passage (15) in a closed position and to release a wastegate passage (15) in an open position, wherein the shaft (31) bears an actuating lever (24) at its second shaft end (31.2) outside of the turbine housing (10), wherein the bearing bushing (50) has a second bearing bushing end (53), which faces the actuating lever (24) in the zone of the outer surface of the turbine housing (10), wherein a spring element (40), a second spring end (40.2) of which rests indirectly or directly on a support surface (24.2) of the actuating lever (24), is used, and wherein the support surface (24.2) is disposed at least sectionall…